56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/* { dg-do compile } */
|
|
/* { dg-options "-O1 -fdump-tree-dom2" } */
|
|
|
|
extern void abort (void);
|
|
union tree_node;
|
|
typedef union tree_node *tree;
|
|
struct tree_vec
|
|
{
|
|
int length;
|
|
tree a[1];
|
|
};
|
|
struct tree_type
|
|
{
|
|
tree binfo;
|
|
};
|
|
union tree_node
|
|
{
|
|
struct tree_type type;
|
|
struct tree_vec vec;
|
|
};
|
|
void
|
|
record_component_aliases (type)
|
|
tree type;
|
|
{
|
|
if (type->type.binfo->vec.length)
|
|
abort ();
|
|
for (; ((
|
|
{
|
|
const tree __z = type->type.binfo;
|
|
if (type->type.binfo->vec.length)
|
|
abort ();
|
|
type->type.binfo->vec.a[4];}
|
|
)->vec.length);)
|
|
{
|
|
if (4 >= type->type.binfo->vec.length)
|
|
abort ();
|
|
blah ();
|
|
}
|
|
}
|
|
|
|
/* The call to blah should have been eliminated. If the call is not
|
|
eliminated, then dominator optimizations failed and it'll be
|
|
impossible to delete other unnecessary code. */
|
|
/* { dg-final { scan-tree-dump-not "blah \\(\\)" "dom2" } } */
|
|
|
|
/* There should be two IF conditionals. */
|
|
/* { dg-final { scan-tree-dump-times "if " 2 "dom2"} } */
|
|
|
|
/* There should be a single load of type.binfo. */
|
|
/* { dg-final { scan-tree-dump-times "type\\.binfo" 1 "dom2"} } */
|
|
|
|
/* There should be two loads of vec.length. */
|
|
/* { dg-final { scan-tree-dump-times "vec.length" 2 "dom2"} } */
|
|
|
|
/* { dg-final { cleanup-tree-dump "dom2" } } */
|